TROUBLESHOOTING (ENGINE)

Troubleshooting (Engine)

Symptom

Possible Problem

Solution

 

 

 

 

Spark plug bridging?

Check gap, insulation or replace spark plug.

 

 

 

 

Carbon deposit on spark plug?

Clean or replace spark plug.

 

 

 

 

Short circuit due to defi cient spark plug

Check spark plug insulation, replace if worn.

 

insulation?

 

 

 

 

 

 

Improper spark plug gap?

Set to proper gap.

 

 

 

 

Fuel reaching carburetor?

Check fuel line.

 

 

 

 

Water in fuel tank?

Flush or replace fuel tank.

 

 

 

 

Fuel fi lter clogged?

Replace fuel fi lter.

 

 

 

Diffi cult to start, fuel is available, but no spark at

Stuck carburetor?

Check fl oat mechanism.

 

 

Spark plug is red?

Check transistor ignition unit.

spark plug.

 

 

If insuffi cient compression, repair or replace

 

Spark plug is bluish white?

engine. If injected air leaking, correct leak. If

 

 

carburetor jets clogged, clean carburetor.

 

 

 

 

 

Check transistor ignition unit is broken, and

 

No spark present at tip of spark plug?

replace defective unit. Check if voltage cord

 

cracked or broken and replace. Check if spark

 

 

 

 

plug if fouled and replace.

 

No oil?

Add oil as required.

 

 

 

 

Oil pressure alarm lamp blinks upon starting? (if

Check automatic shutdown circuit, "oil sensor".

 

applicable)

(if applicable)

 

 

 

 

ON/OFF switch is shorted?

Check switch wiring, replace switch.

 

 

 

Diffi cult to start, fuel is available, and spark is

Ignition coil defective?

Replace ignition coil.

 

 

Improper spark gap, points dirty?

Set correct spark gap and clean points.

present at the spark plug.

 

 

Condenser insulation worn or short circuiting?

Replace condenser.

 

 

 

 

 

Spark plug wire broken or short circuiting?

Replace defective spark plug wiring.

 

Wrong fuel type?

Flush fuel system, replace with correct type of

 

fuel.

 

 

Diffi cult to start, fuel is available, spark is

 

 

Water or dust in fuel system?

Flush fuel system.

present and compression is normal.

 

 

Air cleaner dirty?

Clean or replace air cleaner.

 

 

 

 

 

Choke open?

Close choke.

 

 

 

 

Suction/exhaust valve stuck or protruded?

Reseat valves.

 

 

 

Diffi cult to start, fuel is available, spark is

Piston ring and/or cylinder worn?

Replace piston rings and/or piston.

 

 

Cylinder head and/or spark plug not tightened

 

present and compression is low.

Torque cylinder head bolts and spark plug.

properly?

 

 

 

 

 

 

Head gasket and/or spark plug gasket damaged?

Replace head and spark plug gaskets.

 

 

 

 

No fuel in fuel tank?

Fill with correct type of fuel.

 

 

 

 

Fuel cock does not open properly?

Apply lubricant to loosen fuel cock lever,

 

replace if necessary.

No fuel present at carburetor.

 

 

 

Fuel fi lter/lines clogged?

Replace fuel fi lter.

 

 

 

 

 

Fuel tank cap breather hole clogged?

Clean or replace fuel tank cap.

 

 

 

 

Air in fuel line?

Bleed fuel line.

 

 

 

MVH408GH PLATE COMPACTOR • OPERATION AND PARTS MANUAL — REV. #0 (03/25/14)— PAGE 31

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Multiquip MVH408GH manual Troubleshooting Engine

MVH408GH specifications

The Multiquip MVH408GH is a powerful and versatile piece of equipment designed for professionals in the construction and landscaping industries. This robust vibratory plate compactor is engineered to deliver high performance while ensuring operator comfort and ease of use. With its advanced features and technology, the MVH408GH stands out as an essential tool for compacting soil, gravel, and asphalt.

One of the key features of the MVH408GH is its Honda GX160 engine. This reliable, air-cooled, 4-stroke engine offers excellent fuel efficiency and low emissions, making it an environmentally friendly option. The engine delivers a maximum power output, ensuring that the compactor can handle even the toughest jobs with ease. Thanks to its high-performance engine, the MVH408GH can achieve an impressively high compaction force, making it suitable for a wide range of applications.

The compactor is equipped with a heavy-duty, solid steel base plate, designed to withstand the rigors of frequent use. The base plate measures 22 inches wide, providing a large effective surface area that maximizes compaction efficiency. Additionally, the design of the plate helps to reduce vibration transmitted to the operator, enhancing comfort during prolonged operation.

Another significant feature of the MVH408GH is its easy maneuverability. The compactor features a lightweight design that allows operators to transport and position it effortlessly. It also comes with a foldable handle, which not only allows for compact storage but also provides convenient lifting and carrying options.

The technologically advanced vibration system in the MVH408GH helps to achieve superior compaction results. The system is precisely engineered to produce a high-frequency vibration, which aids in the densification of material during the compaction process. This results in optimal performance, enabling operators to complete their tasks more efficiently.

Safety is also a priority in the design of the MVH408GH. The compactor features a protective frame that shields the engine and other critical components from potential damage on the job site. Additionally, it is equipped with convenient controls that are easy to access, promoting safe and straightforward operation.

In summary, the Multiquip MVH408GH is a top-tier vibratory plate compactor characterized by its powerful Honda engine, robust construction, high compaction efficiency, and user-friendly design. The combination of these features makes it an ideal choice for construction professionals seeking reliability and performance in their compaction equipment.